All categories

2 years ago

-2(x+5)=4 please solve

Mathematics

2 answers:

marshall27 [118]2 years ago

5 0

-2(x+5)=4

-2(x) = -2x

-2(5) = -10

-2x-10=4

-2x=4+10

-2x=14

x=-7

aliya0001 [1]2 years ago

4 0

Answer:

x=-7

Step-by-step explanation:

-2(x+5)=4

-2x-10=4

-2x=14

2x=-14

x=-7

You might be interested in

What are the two plot lines for this

Lyrx [107]

Answer:

You can plot the lines by putting the values of x and y.

For y=x-2, if we put x= 2, then we got y=0

So, the point for this equation will be (2,0). Similarly, you can get many points for the equations and join them to plot lines in the graph.

4 0

3 years ago

A _____ has two-fold rotational symmetry.

Neko [114]

The answer is D. line.

5 0

3 years ago

28-(3x+4)=2(x+6)+x How would you solve this??? Please add step by step explanation

enot [183]

Answer:

x = 2

Step-by-step explanation:

7 0

2 years ago

Is (x + 7) a factor of f(x) = x^3 − 3x^2 + 2^x − 8? Use either the remainder theorem or the factor theorem to explain your reaso

Natasha_Volkova [10]

Answer:

Not a factor

Step-by-step explanation:

We can use Factor Theorem to answer this question. According to this theorem, in order to find if (x - a) is a factor of a polynomial f(x), calculate f(a). If f(a) comes out to be equal to zero, this will mean that (x-a) is factor of f(x).

Here, the expression we have is (x + 7), so we need to find f(-7) in order to check if (x+7) is a factor of f(x) or not

$f(x)=x^{3}-3x^{2}+2x-8$

Substituting x = -7, we get:

$f(-7)=(-7)^{3}-3(-7)^{2}+2(-7)-8\\\\ f(-7)=-512$

Since f(-7) ≠ 0, (x + 7) is not a factor of the polynomial f(x)

4 0

3 years ago

Solve this equation 2(y + 2) = 3(y - 7)

aliina [53]

Answer:

$2(y + 2) = 3(y - 7) \\ 2y + 2 \times 2 = 3y - 3 \times 7 \\ 2y + 4 = 3y - 21 \\ y \: terms \: togther \\ 3y - 2y = 4 + 21 \\ y = 25$

$thank \: you$

8 0

2 years ago